/**
 * A simple asynchronous lock utility class that allows controlling access to a critical section.
 * It provides a mechanism to create a lock and wait for its release using promises.
 */
export declare class AsyncLock {
    unlock?: any;
    promise?: Promise<unknown> | undefined;
    /**
     * Creates an instance of the AsyncLock class.
     *
     * @param {boolean} [lock=false] - Optional parameter to lock the instance immediately upon creation.
     */
    constructor(lock?: boolean);
    /**
     * Locks the instance, making it awaitable until unlocked.
     * A new promise is created for the lock, and the existing unlock function is replaced with a new one.
     */
    lock(): void;
}